import time
from datetime import datetime, timedelta

from flask import current_app, jsonify
from flask import g
from flask import redirect
from flask import render_template
from flask import request
from flask import session
from flask import url_for

from info import constants
from info.models import User, News, Category
from info.utils.common import user_login_data
from info.utils.image_sstorage import storage
from info.utils.response_code import RET
from . import admin_blu


@admin_blu.route('/login', methods=['GET', 'POST'])
def admin_login():
    """
    超级管理员登陆视图
    :return: 登陆页面/超级管理员主页面
    """
    # GET 请求为登陆页面
    if request.method == 'GET':
        # 防止普通用户直接进入管理员页面,获取用户数据判断
        user_id = session.get('user_id', None)
        is_admin = session.get('is_admin', False)
        # 如果都为正则为管理员,直接跳转到管理主页面
        if user_id and is_admin:
            return redirect(url_for('admin.admin_index'))

        return render_template('admin/login.html')

    # 获取参数
    username = request.form.get("username")
    password = request.form.get("password")
    if not all([username, password]):
        return render_template('admin/login.html', errmsg="参数不足")

    try:
        # 查询用户
        user = User.query.filter(User.mobile == username).first()
    except Exception as e:
        current_app.logger.error(e)
        return render_template('admin/login.html', errmsg="数据查询失败")

    # 判断用户是否存在
    if not user:
        return render_template('admin/login.html', errmsg="用户不存在")

    # 对比密码
    if not user.check_passowrd(password):
        return render_template('admin/login.html', errmsg="密码错误")

    # 判断时超级管理员还是普通用户
    if not user.is_admin:
        return render_template('admin/login.html', errmsg="用户权限错误")

    # 将管理员信息保存到 session中,其他页面也可以管理员信息
    session["user_id"] = user.id
    session["nick_name"] = user.nick_name
    session["mobile"] = user.mobile
    session["is_admin"] = True

    # 跳转到管理主页
    return redirect(url_for('admin.admin_index'))  # admin文件下 admin_index视图函数


@admin_blu.route('/index')
@user_login_data
def admin_index():
    """
    管理员主页面
    :return: 主页面
    """
    user = g.user
    data = {
        'user': user
    }
    return render_template('admin/index.html', data=data)


@admin_blu.route('/user_count')
def user_count():
    """
    用户统计视图
    :return:
    """
    total_count = 0  # 记录用户总数
    try:
        # 查询所有普通用户
        total_count = User.query.filter(User.is_admin == False).count()
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR, errmsg="查询错误")

    # 记录月新增人数
    mon_count = 0
    now = time.localtime()  # 当前时间
    mon_begin = '%d-%02d-01' % (now.tm_year, now.tm_mon)  # 根据当前时间获得这个月一号零点时间
    mon_begin_date = datetime.strptime(mon_begin, '%Y-%m-%d')  # 将数字形式时间转换为 年月日数字格式, strftime转换成年月日字符串格式
    try:
        # 查询出当月注册的用户总数
        mon_count = User.query.filter(User.is_admin == False, User.create_time >= mon_begin_date).count()
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR, errmsg="查询错误")

    # 当日新增用户
    day_count = 0
    # 当日零时时间, 与查询当月时间方式一样
    day_begin_data = datetime.strptime('%d-%02d-%02d' % (now.tm_year, now.tm_mon, now.tm_mday), '%Y-%m-%d')
    try:
        # 查询出在今日注册的用户数
        day_count = User.query.filter(User.is_admin == False, User.create_time >= day_begin_data).count()
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR, errmsg="查询错误")

    # 将当前时间转换成字符串格式,再转换成数字模式
    now_date = datetime.strptime(datetime.now().strftime('%Y-%m-%d'), '%Y-%m-%d')

    active_data = list()  # 存储时间列表
    active_count = list()  # 存储用户数量

    for i in range(0, 31):
        # 当前时间天数减去i天 ,等于对应天数的零时
        begin_date = now_date - timedelta(days=i)
        # 当前时间减去 i减1天,等于对应天数的24时
        end_date = now_date - timedelta(days=(i - 1))
        # 将当天零时时间转换字符串格式保存在列表中
        active_data.append(begin_date.strftime('%Y-%m-%d'))
        count = 0
        try:
            count = User.query.filter(User.is_admin == False, User.last_login >= begin_date,
                                      User.last_login < end_date).count()
        except Exception as e:
            current_app.logger.error(e)
        # 将人数添加到列表中
        active_count.append(count)

    # 最新时间在右边,所以列表需要反转
    active_data.reverse()
    active_count.reverse()

    data = {
        "total_count": total_count,
        "mon_count": mon_count,
        "day_count": day_count,
        'active_count': active_count,
        'active_data': active_data
    }

    return render_template('admin/user_count.html', data=data)


@admin_blu.route('/user_list')
def user_list():
    """
    用户列表视图
    :return: 用户信息表单页面
    """
    # 获取参数
    page = request.args.get('p', 1)
    # 判断数据
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")

    users = []
    current_page = 1
    total_page = 1

    try:
        # 查询数据
        paginate = User.query.filter(User.is_admin == False).order_by(User.last_login.desc()).paginate(page, constants.ADMIN_USER_PAGE_MAX_COUNT, False)
        users = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    # 将模型列表转成字典列表
    users_list = []
    for user in users:
        users_list.append(user.to_admin_dict())

    data = {
        "total_page": total_page,
        "current_page": current_page,
        "users": users_list}
    return render_template('admin/user_list.html', data=data)


@admin_blu.route('/news_review')
def news_review():
    """
    待审核新闻显示视图
    :return: 待审核新闻
    """

    # 获取参数
    page = request.args.get("p", 1)
    keywords = request.args.get("keywords", "")
    # 判断参数
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1

    try:
        filters = [News.status != 0]  # 查询条件
        if keywords:  # 如果为真说明是在用关键字查询
            filters.append(News.title.contains(keywords))

        # 查询符合条件的数据, 待审核新闻,以创建的时间排序,分页
        paginate = News.query.filter(*filters) \
            .order_by(News.create_time.desc()) \
            .paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)

        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages

    except Exception as e:
        current_app.logger.error(e)

    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_review_dict())

    data = {
        "total_page": total_page,
        "current_page": current_page,
        "news_list": news_dict_list
    }

    return render_template('admin/news_review.html', data=data)


@admin_blu.route('/news_review_detail', methods=['GET', 'POST'])
def news_review_detail():
    """
    新闻审核视图
    :return:
    """
    if request.method == 'GET':
        # 获取参数
        news_id = request.args.get("news_id")
        # 判断参数
        if not news_id:
            return render_template('admin/news_review_detail.html', data={"errmsg": "未查询到此新闻"})

        news = None
        try:
            # 通过新闻id,查询新闻
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)

        # 判读是否有此新闻
        if not news:
            data = {
                'errno': RET.DBERR,
                "errmsg": "未查询到此新闻"
            }
            return render_template('admin/news_review_detail.html', data=data)
        # --------------------------------------------------------------------------------------------------
        data = {
            "news": news.to_dict()
        }
        return render_template('admin/news_review_detail.html', data=data)

    # ---------------------------------------不同功能分割线------------------------------------------------------

    # 获取参数
    news_id = request.json.get("news_id")
    action = request.json.get("action")

    # 2.判断参数
    if not all([news_id, action]):
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
    if action not in ("accept", "reject"):
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")

    news = None
    try:
        # 3.查询新闻
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)
    # 判断查询是否有结果
    if not news:
        return jsonify(errno=RET.NODATA, errmsg="未查询到数据")

    # 4.accept 为通过审核
    if action == "accept":
        # 修改审核状态保存到数据库
        news.status = 0
    else:
        # 拒绝通过，需要获取原因
        reason = request.json.get("reason")
        if not reason:
            return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
        # 拒绝原因,修改状态保存到数据库,
        news.reason = reason
        news.status = -1

    return jsonify(errno=RET.OK, errmsg="操作成功")


@admin_blu.route('/news_edit')
def news_edit():
    """
    新闻版式渲染视图
    :return:
    """
    # 获取参数
    page = request.args.get("p", 1)
    keywords = request.args.get("keywords", "")
    # 判断参数
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1

    try:
        filters = []
        # 如果有关键词
        if keywords:
            # 添加关键词的检索选项
            filters.append(News.title.contains(keywords))

        # 查询新闻,按创建时间排列
        paginate = News.query.filter(*filters) \
            .order_by(News.create_time.desc()) \
            .paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)

        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages

    except Exception as e:
        current_app.logger.error(e)

    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_basic_dict())

    data = {
        "total_page": total_page,
        "current_page": current_page,
        "news_list": news_dict_list
    }

    return render_template('admin/news_edit.html', data=data)


@admin_blu.route('/news_edit_detail', methods=['GET', 'POST'])
def news_edit_detail():
    """
    新闻版式编辑功能视图
    :return:
    """
    if request.method == 'GET':
        # 获取参数
        news_id = request.args.get("news_id")

        # 判断参数
        if not news_id:
            return render_template('admin/news_edit_detail.html', data={"errmsg": "未查询到此新闻"})

        news = None
        try:
            # 查询新闻
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)

        if not news:
            return render_template('admin/news_edit_detail.html', data={"errmsg": "未查询到此新闻"})

        # 查询分类的数据
        categories = Category.query.all()
        categories_li = []
        for category in categories:
            # 对象字典
            c_dict = category.to_dict()
            # 增加字典key value
            c_dict["is_selected"] = False
            # 新闻分类id = 新闻外键id
            if category.id == news.category_id:
                c_dict["is_selected"] = True
            categories_li.append(c_dict)
        # 移除`最新`分类
        categories_li.pop(0)

        data = {
            "news": news.to_dict(),
            "categories": categories_li
        }
        return render_template('admin/news_edit_detail.html', data=data)

    # ---------------------------------------不同功能分割线------------------------------------------------------

    news_id = request.form.get("news_id")
    title = request.form.get("title")
    digest = request.form.get("digest")
    content = request.form.get("content")
    index_image = request.files.get("index_image")
    category_id = request.form.get("category_id")
    # 1.1 判断数据是否有值
    if not all([title, digest, content, category_id]):
        return jsonify(errno=RET.PARAMERR, errmsg="参数有误")

    news = None
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)
    if not news:
        return jsonify(errno=RET.NODATA, errmsg="未查询到新闻数据")

    # 1.2 尝试读取图片
    if index_image:
        try:
            index_image = index_image.read()
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.PARAMERR, errmsg="参数有误")

        try:
            # 2. 将标题图片上传到七牛
            key = storage(index_image)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.THIRDERR, errmsg="上传图片错误")
        news.index_image_url = constants.QINIU_DOMIN_PREFIX + key

    # 3. 设置相关数据
    news.title = title
    news.digest = digest
    news.content = content
    news.category_id = category_id

    return jsonify(errno=RET.OK, errmsg="编辑成功")


@admin_blu.route('/news_category')
def get_news_category():
    """
    新闻分类管理视图
    :return:
    """
    # 获取所有的分类数据
    categories = Category.query.all()
    # 定义列表保存分类数据
    categories_dicts = []

    for category in categories:
        # 获取字典
        cate_dict = category.to_dict()
        # 拼接内容
        categories_dicts.append(cate_dict)

    categories_dicts.pop(0)
    # 返回内容
    return render_template('admin/news_type.html', data={"categories": categories_dicts})


@admin_blu.route('/add_category', methods=["POST"])
def add_category():
    """修改或者添加分类"""

    category_id = request.json.get("id")
    category_name = request.json.get("name")
    if not category_name:
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
    # 判断是否有分类id
    if category_id:
        try:
            category = Category.query.get(category_id)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.DBERR, errmsg="查询数据失败")

        if not category:
            return jsonify(errno=RET.NODATA, errmsg="未查询到分类信息")

        category.name = category_name
    else:
        # 如果没有分类id，则是添加分类
        category = Category()
        category.name = category_name

    return jsonify(errno=RET.OK, errmsg="保存数据成功")